(******this is a quantatative analysis problem)The Scotty dog food company manufacturers three different grades of food, regular, light and premium. Regular grade sells for $17 a bag, light sells for $20 a bag and premium sells for $25 a bag. It costs $3, $6, and $10 in raw materials to produce each product respectively. The upper limit on demand for is product is 1,000 bags, 800 bags and 300 bags respectively. The company has allocated $100,000 for Raw material expenses. Formulate an LP model to maximize share holder wealth. (i need the excel formula)